What to Check When Your AC is Blowing Warm Air in Summer

When summer hits Glendale, CA, having a dependable air conditioning system is a must for staying comfortable. However, there may come a time when your AC starts blowing warm air instead of the refreshing cool breeze you expect. This issue can be frustrating, especially during the warm months when you rely on your AC to keep your home comfortable and livable. Knowing what to check when this happens is important, as it could save you from needless discomfort and expense.

Let's look at simple steps you can take to troubleshoot your AC when it starts blowing warm air. From checking the thermostat to examining the air filter, each point will help guide you toward finding the root of the problem. Whether the issue lies within the thermostat settings or it’s time for a little maintenance, these checks can help you diagnose the problem. Let's explore the crucial checkpoints to get your AC back to cooling effectively.

Check the Thermostat Settings

The thermostat is the first place to begin. It may sound basic, but ensuring your thermostat is set to "cool" is an essential step. Check that the temperature setting is lower than your current room temperature. Sometimes, the thermostat can accidentally be set to “heat” or “fan only,” which will result in your AC blowing warm air. A simple switch back to “cool” and adjusting the temperature can often resolve the issue.

Also, it’s a good idea to verify if the thermostat has any programming errors. Occasionally, an unexpected change in schedule can cause the settings to switch modes. If your thermostat still uses batteries, consider replacing them to ensure it functions correctly. Addressing power issues might seem minor, but they can be the key to getting your AC back on track efficiently. By taking these quick actions, you can rule out the thermostat as a potential problem, ensuring it’s working correctly.

Inspect and Replace the Air Filter

The next step in troubleshooting is to inspect and, if necessary, replace the air filter. A dirty or clogged air filter can significantly restrict airflow, causing your AC to work harder and still not cool properly. Over time, the accumulation of dust and debris can obstruct the airflow, making it impossible for the system to circulate cool air effectively.

To inspect your air filter, locate the filter compartment (usually found near the return air duct), slide out the filter, and check its condition. If you find it dirty or clogged, it’s time to replace it. Choosing a filter that fits your system is crucial for maintaining good airflow and efficiency. Regular filter replacement not only ensures optimal performance but also extends the lifespan of your AC unit. Keep in mind that a cleaner air filter can lead to fresher, more hygienic air inside your home, contributing to a healthier environment overall. By taking care of this simple maintenance task, you're effectively minimizing the chances of warm air blowing through your AC.

Examine the Outdoor Unit

Your AC's outdoor unit plays a significant role in keeping your home cool, and its condition can greatly affect performance. Over time, dirt, leaves, and other debris can build up around the unit, obstructing airflow and reducing its efficiency. To ensure your system runs smoothly, it's important to keep the area surrounding the outdoor unit clear. Regularly inspect the unit and remove any visible debris.

Look closely for any signs of physical damage to the unit, such as bent fins, which can disrupt airflow. Check if the unit is receiving power by listening for the fan running and ensuring the circuit breaker hasn't tripped. A simple reset might be all that's needed to restore power. By maintaining a clean and unobstructed outdoor unit, you support the AC system's cooling process, preventing warm air issues.

Check Refrigerant Levels

The refrigerant in your AC system is vital for cooling the air that circulates through your home. When refrigerant levels are low, the AC may struggle to cool effectively, leading to warm air output. Low refrigerant can be due to leaks or insufficient initial charging. Unfortunately, handling refrigerant is not something to tackle alone, as it requires specialized equipment and the correct procedures.

It is best to have professionals measure and, if necessary, refill the refrigerant to the appropriate levels. They can also check for leaks and repair them, ensuring your system remains efficient and your home comfortable. By addressing refrigerant issues with expert assistance, you ensure the longevity and performance of your AC unit.

Ensure Proper Airflow

Airflow is crucial for the proper functioning of your AC system. Blocked vents or closed ducts can obstruct the cold air circulation, making your AC seem inefficient. Walk through your home and inspect each vent and duct to confirm they are open and unblocked by furniture or curtains. Clearing these obstructions can help restore thorough airflow and enhance the cooling effectiveness of your system.

In addition, check that all internal doors and windows are closed while the AC is operating. This simple step ensures that your system isn't working harder than it needs to cool an open space, which can significantly affect its performance. Efficient airflow supports your AC's ability to maintain a consistent and comfortable temperature in your home.

Reach Out for Professional Assistance

While these checks can help solve many common issues, there are times when expert help is necessary. Our trained professionals are equipped to handle more complex problems and conduct thorough inspections. Regular maintenance by experienced technicians can prevent many issues before they arise and keep your system running at peak efficiency.

Attempting to fix intricate problems without the proper knowledge or tools can lead to further damage. Scheduling a maintenance visit not only ensures your system is in good working order, but it also provides peace of mind knowing your home's comfort is in capable hands. Letting the experts take over translates into long-term reliability and performance of your AC system.

Keeping Your AC Running Smoothly

Taking a proactive approach to AC maintenance in Glendale can significantly prevent issues like warm air output. Regular checks on the thermostat, air filters, outdoor unit, refrigerant levels, and airflow ensure that your system stays efficient and effective. By recognizing and addressing these factors early on, you can extend your AC's lifespan and sustain indoor comfort during those hot summer days.

By embracing these precautionary steps, you're setting your home up for continued comfort and efficiency. While minor tasks can be done independently, never hesitate to reach out to our experts for professional help and detailed diagnostics. Our team is always ready to assist and ensure your AC performs at its best, providing you with a cool and welcoming home environment.

If you want to boost your skills in HVAC maintenance in Glendale, consider learning more about our air conditioner technician school to gain a deeper understanding of keeping your AC system efficient. At Institute of Heating and Air Conditioning Industries, Inc, we believe that an informed approach can prevent minor issues from turning into costly repairs. For a quick estimate or to book a service visit, please contact us today.